Spinning capacity pallavaa group, erode 638 006, tamil. In a ring frame 30 ne carded yarn is to be spun in which spindle speed is 17000 r. Compared to ring spinning, rotor spinning offers higher productivity and so the production costs are much lower. Highspeed gelspinning of ultrahigh molecular weight. Spinning basics page 4 of 7 height of handle bars adjust so the handle bars are level to slightly below the seat height. These processes are based on the use of organic solvents that dissolve the pan polymer and a solution is formed. The yarn issuing from the drafting rollers passes through a threadguide, round a traveller that is free to rotate around a ring, and then onto a tube or bobbin, which is carried on a spindle, the axis of which passes through a center of the ring.
Ring spinning machine or ring frame is used to produce required count of yarn from the supplied roving by the drafting. Request pdf improvement of overall equipment efficiency of ring frame through total productive maintenance. It is used for the measurement of weight per unit length of yarn. Metal spinning design consideration and parameter of. Hok is calculated at each stage of production in a spinning mill. The spinning limit for three different fibres cotton, viscose rayon and polyester on a dref3 friction spinning machine has been investigated. The basic mechanics of chiptype machining processes fig. Simulations of multifilament spinning of pet fibers, based on a newtonian constitutive model, are described in 3, 4, and 5. Full text of cotton spinning calculations and yarn costs. Cost analysis of spinning mills show raw materials, power important factors today, the availability of cotton and synthetic staple fibers is not a problem. Aug 29, 2015 speed frame production calculation math 2. In 1981, the company used amine oxide as a new solvent spinto. Spinning basics page 2 of 7 main program now, the main part of the program begins. Asymmetric spinning in addition to being inflexible, conventional spinning is limited to production of axisymmetric parts.
Box 12, jerusalem, israel institute of chemistry and the center for nanoscience and. Efficiency it is the ability of a material to perform its task. Aug 04, 20 the production is usually calculated in the units of weighttime or lengthtime e. Calculations of fivewheel and sevenwheel take up motion of loom. The instructor arranges elements, such as those shown under the spinning elements section into a 45 to 60 minute program. A practical and comprehensive manual of calculations, yarn costs. Metal spinning manufacturing and design considerations. The spindle is driven usually at an angular velocity that is either constant or changes only slowly and the. This paper describes the peculiarities encountered in the numerical modeling of noncircular spinning processes using motioncontrolled roller tools and applying the finite element method fem. In 1830, another american scientist, jenk, contributed the traveler rotating on the ring. The principles of inserting real twist into an assembly of fibres are illustrated in fig. Calculations of hok in the case of a spinning mill of 17280 spindles producing 14157 kgms. As the speed is higher than ring spinning, the produced yarns are coarser than ring spun yarns. It is equal to the number of operative hours required to produce 100 kgms.
In 2014 season, for the third time in a row, the main production countries supplied more raw material than what was processed by spinning mills. Pdf impact of different stages of spinning process on fibre. The change in yarn properties with progressive change in count has also been reported. Production calculations production the output of a mc per unit time is called its production. Formulas used for yarn spinning production including various yarn numbering system conversions. Production the output of a mc per unit time is called its production. Turns per inch of 19 to 20 is generally used by the spinners for spinning of 21 ne warp yarn. This process is suitable for producing noncircular, hollow components in small to mediumsized production lots. Production calculation of ring frame textile calculation. Pallavaa group over 40 years of reliability, integrity and reverence in the spinning and weaving industry, initially focussing on the highend fashion fabric industry, now made available to the masses a revolution created by modern day brands.
So if the unit is not mentioned, it is understood to be a production hr. The production technology is simple, based entirely on existing. In this context, the question of higher production at each spinning sequence of machine gains importance. In the present chapter, the solution spinning processes will be briefly described. Ring spinning system is a conventional but most usable spinning system that is able to produce highest quality product at low production rate. Whenever the type of count is not mentioned with the count, it is understood. Calculation of draft and twist in ring spinning textile. Spinning calculations conversion of weight units o 1kg 2. Production balance in spinning mills pakistan textile journal. A tool with a certain rake angle a positive as shown and relief angle moves along the surface of the workpiece at a depth t 1. The count range has been seen to be dependent on fibre type. Jul 16, 2011 this paper describes the peculiarities encountered in the numerical modeling of noncircular spinning processes using motioncontrolled roller tools and applying the finite element method fem. Since each instructor does it differently, spinning programs vary considerably. Yarn calculations by samrat dewan linkedin slideshare.
Standard test conditions included a drive speed of 1050 rpm, maximum hertz stresses from 48 000 to 384 000 psi 330x10 6 to 2650x10 nm 6 2, and ambient temperature i. This chapter will examine the major segments of the industry in greater detail, addressing changes in both production tech. Today, some yarns are made through rotor or openended spinning. Simulation of multifilament semicrystalline polymer fiber. Calculate the tpi twist per inch produced on a simplex with diameter of front roller 28 mm and its rpm be 30. Quality requirements of the drywet spinning process. The production is usually calculated in the units of weighttime or lengthtime e.
Calculation of size percentage and calculations related to cloth take up and crimp percentage. Indian cotton and the needs of spinning industry r. Melt spinning is a metal forming technique that is typically used to form thin ribbons of metal or alloys with a particular atomic structure some important commercial applications of melt spun metals include highefficiency transformers amorphous metal transformer, sensory devices, telecommunications equipment, and power electronics. India received 12 august 1992 the new spinning technologies such as rotor, air jet and friction spinning have tremendous potential for hi gher productivity. The production of pan fibers, commercially in the form of copolymers, for over 50 years has been performed by wet spinning and dry spinning processes1,2. The rotor spinning machine is referred to as open end spinning, since there is a definite break in the fiber flow prior to the yarn. Calculate the tpi on simplex if the diameter of back roller is 1516, rpm of b. The formulae used for the calculation of the sn ratio for the above response types are given below.
Prepare the production plan of a spinning mill with the given statically data while the yield age is 82 %, bale wt. Chattopadhyay central institute for research on cotton technology, matunga, mumbai 400019, india received 23 aug 20, accepted 11 november 20, published on the web. The material ahead of the tool is sheared continuously along the shear plane,which makes. To improve the productivity of ring for 9 combed wool and 24 carded count the obtained results was ring frame efficiency percentage plotte d in figure no. The ring spinning machine was first invented in 1828 by the american thorp. So if the unit is not mentioned, it is understood to be a productionhr.
Fineness is expressed as fibre diameter in microns 0. Calculate blow room production, if number of scutchers is 3,shell roll speed is rpm shell roll dia is 9, lap weight is 12ozyd, and efficiency is 85%. Ring spinning is still the way many fibers are turned into yarn, but in the 20th century another method was invented. A typical melt spinning process involves casting molten. Thermal stabilization study of polyacrylonitrile s fiber. How to remember the settings count then write down the number of holes showing in the stem post, seat height post and fore and aft seat bar. The most commonly used unit of time for production calculation is hour. Calculation of length of warp and weft in a fabric, weight of warp and weft. Historically, the formation of fibres by dryspinning was the first to evolve as a method for manufacturing polymerbased fibres, as pointed out in chapter 3. Speed frame production calculation textile study center. Production planning function of the planning department. Possibilities, applications and limitations k r salhotra department of textile technology.
Improvement of overall equipment efficiency of ring frame through. Engineering techniques of ring spinning textile study center. Production calculation formula in spinning textile. If the machine runs at 9% efficiency and twist multiplier is 4. Metal spinning, also called spun metal manufacturing is a manufacturing process that forms sheet metal into a cylindrical or circular shape. Metal spinning design consideration and parameter of spinning process and its terminology. Smith faculty of agriculture, food and environment, and the center for nanoscience and nanotechnology, the hebrew university of jerusalem, p. Calculation of draft in ring spinning it is possible to achieve very high range of draft and twist on modern long spinning frames.
Pbs, values which are comparable to and even surpass those reported for human patellar and achilles tendons. It is used for the measurement of length per unit weight of yarn. Maximum time textile engineers forget the common spinning production calculation formula. Production calculation of spinning is one of the principle tasks for production manager who is responsible in. In the present chapter, the solutionspinning processes will be briefly described. Wet spinning and drawing of human recombinant collagen. The average weight of one inch length of fibre, expressed in micrograms 0. Computercontrolled facilities for continuous casting of metallic fibres and wires performing inrotating liquidspinning inrolisp and shape flow casting sfc were designed and installed to determine and control the nearnetshape casting processes over an extended production period.
Numerical simulation can be used to optimize the process. In this article just i want try to give production calculation formula in cotton spinning. Engineering techniques of ring spinning by engineering techniques of ring spinning. Basic formulas used in spinning process sriyaditha textile. Fiber, fabric, finished products, and machinery manufacturing the previous chapter outlined broad themes affecting the industry complex that converts fiber into apparel and other end uses. Production calculation of spinning is one of the principle tasks for production manager who is responsible in spinning floor. The blank sheet metal is rotated about an axis while a form tool is pressed against the part into a chuck shape tool to form a desired shape. The popularity of ring spinning technique can be depended to high yarn quality, adaptability of all fiber types spinning with very large scale of yarn fineness ne 6 to ne 250 as at the present. Kaoerzi company had started researching cellulose fiber production with nmmo solvent method since 1978.
Quality requirements of the drywet spinning process analysis of raw materials, solutions andfibers frank wendler, birgit kosan, thomas schulze, frank meister centre of excellence for polysaccharide research, thuringian institute for textile and plastics research, breitscheidstr. States, japan and other countries mainly for the production of high fashion. A practical and comprehensive manual of calculations, yarn costs, and other data involved in adapting the. Analysis on the spinning process and properties of tencel yarn. Historically, the formation of fibres by dry spinning was the first to evolve as a method for manufacturing polymerbased fibres, as pointed out in chapter 3. Commonly used units in this system of measurement are. Calculation of twist in ring spinning by changing the speed of the main pulley and adjustments in the twist change and auxiliary twist change gears wide range of twist can be achieved.
Asuperscript 6a6 brsuperscript 8 cotton spinning calculations and yarn costs. Purchase advanced fiber spinning technology 1st edition. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any sizereduction requirements including, spinning production formulas, quarry, aggregate, and different kinds of minerals. Cost analysis of spinning mills show raw materials, power. Jan 04, 2015 spinning calculation1 production calculations q.
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